Search Results
Results 401 - 450 of 2335
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Comas Montse - - 2010
OBJECTIVE: To evaluate cardiac function by tissue Doppler imaging vs conventional echocardiography in intrauterine growth restriction. STUDY DESIGN: A prospective study in 25 intrauterine growth restriction, and in 50 normally grown fetuses between 24 and 34 weeks. Conventional echocardiography (E/A ratios, outflow tract velocities and myocardial performance index), and tissue ...
Guazzi Marco - - 2010
Previous investigations have reported a relationship between variables obtained from echocardiography with tissue Doppler imaging (TDI) and cardiopulmonary exercise testing (CPX) in systolic heart failure (HF) cohorts. The purpose of the present investigation was to perform a comparative analysis between echocardiography with TDI and CPX in patients with HF and ...
Karaahmet Tansu - - 2010
Primary myocardial involvement is common in systemic sclerosis (SSc). We evaluated the atrial and ventricular electromechanical characteristics by using tissue Doppler echocardiography in SSc patients with subclinical cardiac involvement. Twenty-seven consecutive patients (24 women; mean age +/- SD 49.9 +/- 11.3 years) presenting with SSc without pulmonary arterial hypertension or ...
Chinali Marcello M Division of Cardiovascular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01655, - - 2010
Few epidemiological studies have examined differences in the prevalence of risk factors and comorbidities in patients with systolic heart failure (HF), as compared with those with diastolic HF. We analyzed data from 1426 residents of the Worcester (MA) metropolitan area hospitalized at all 11 greater Worcester medical centers for acute ...
Erden Ismail - - 2010
SUMMARY AIM: The prevalence of myocardial involvement in influenza infection ranges from 0% to 12% depending on the diagnostic criteria used to define myocarditis. Whether such an association holds for the novel influenza A strain, pandemic-2009-H1N1, remains unknown. The aim of this present study is to evaluate the cardiovascular manifestations ...
Zimbarra Cabrita Inês - - 2010
Myocardial performance index (MPI) measured by conventional Doppler is routinely used to assess right ventricular (RV) systolic function in patients with pulmonary hypertension (PH). Our aim was to determine whether MPI measured by Doppler tissue imaging (tMPI) is effective in assessing RV function in these patients. Retrospectively, we have studied ...
Seth Rachna - - 2010
To study role of Tissue Doppler imaging (TDI) in identification of cardiomyopathy before development of ventricular dysfunction. Twenty-five patients with Duchenne's (DMD) and 10 with Becker's (BMD) muscular dystrophy along with 20 controls were evaluated using TDI. Pulse Tissue Doppler signals of the lateral left ventricle wall (lateral mitral annulus) ...
Mukhaini Mohammed - - 2010
BACKGROUND: It is known that right ventricular systolic parameters as assessed by color tissue Doppler imaging (TDI) are abnormal in patients with inferior wall ST elevation myocardial infarction (IWMI) with right ventricular myocardial infarction (RVMI). This study was undertaken to determine right ventricular diastolic function as assessed by TDI in ...
Pala Selcuk - - 2010
Despite many potential benefits, thiazolidinedione (TZD) use has been associated with increased exacerbation rate of heart failure due to fluid retention. In our study, the effect of rosiglitazone and pioglitazone on myocardial function in patients with type 2 diabetes mellitus (DM) and normal left ventricular systolic function was evaluated by ...
Henareh Loghman - - 2010
To investigate the association between intima-media thickness of brachial and common carotid arteries and factors of the coagulation- and fibrinolysis-system with left ventricular diastolic dysfunction in patients with a previous myocardial infarction. One hundred and twenty three patients, men (76%) and women (24%) aged between 32 and 81 years with ...
Shabanian Reza - - 2010
Early detection of myocardial iron overload is crucial for optimal management of patients with beta thalassemia major, which could lead to intensification of iron chelating therapy. In this study, we evaluate the conventional echocardiography and tissue Doppler imaging measurements in patients with beta thalassemia major and further introduce the assessment ...
Rydman Riikka - - 2010
BACKGROUND: Assessments of right ventricular (RV) function using myocardial velocities in patients with pulmonary embolism (PE) may add vital information. METHODS: Thirty-four patients with PE were studied in the acute stage and 3 months afterward. Tricuspid annular velocity was recorded using pulsed-wave Doppler tissue imaging. RESULTS: At the time of ...
Montisci Roberta - - 2010
BACKGROUND: The chronic consumption of androgenic anabolic steroids (AAS) has shown to cause subclinical impairment of myocardial function. Pulsed-wave Doppler tissue imaging (PWDTI) detects early regional alterations of ventricular function, whereas integrated backscatter cyclic variations (IBScv) are tightly related to the contractile efficiency of the left ventricular wall. The aim ...
Meimoun Patrick - - 2010
To assess the usefulness of non-invasive coronary flow reserve (CFR) to predict left ventricular adverse remodelling (LVR) after ST-elevation myocardial infarction (STEMI). Sixty-five consecutive patients (mean age 58 +/- 13 years, 24 women) with a first anterior STEMI, underwent prospectively CFR in the distal part of the left anterior descending ...
Leong Darryl P - - 2010
Heart failure with normal ejection fraction (HFNEF), previously referred to as diastolic heart failure, has increased in prevalence as a cause of heart failure, now accounting for up to 50% of all cases. Contrary to initial evidence, the prognostic outlook in HFNEF may be similar to that of heart failure ...
Meco M - - 2010
AIM: The main indexes of ventricular function used in clinical practice are strongly influenced by the ventricular load conditions. Tissue Doppler imaging (TDI) has been reported to be a powerful modality that enables assessment of ventricular wall motion with a high temporal and spatial resolution. The study of the systolic ...
Duzenli M A - - 2010
OBJECTIVES: The results of the studies in which the effect of hormone replacement therapy (HRT) on cardiac function have been evaluated are rather disputable. In these studies, cardiac function was evaluated with conventional echocardiographic methods. This study was planned in order to investigate the effects of HRT on myocardial velocities ...
Bartlett Heather L - - 2010
Advances using Xenopus as a model permit valuable inquiries into cardiac development from embryo to adult. Noninvasive methods are needed to study cardiac function longitudinally. The objective of this study was to evaluate the feasibility of echocardiographic studies in Xenopus and establish normative data of adult cardiac structure and function. ...
Boles Usama - - 2010
A standard 12-lead electrocardiogram (ECG) is performed in all hypertensive patients, primarily to detect left ventricular hypertrophy. Echocardiographic assessment of hypertensive subjects reveals that abnormalities in diastolic function occur more commonly and earlier than increased left ventricular mass. However, ECG changes associated with diastolic dysfunction (DD) remain poorly defined; we ...
Hanna Elias B - - 2010
OBJECTIVE: To evaluate the left-ventricular diastolic chamber size in patients with a normal ejection fraction and elevated left-sided filling pressures. BACKGROUND: The consensus view that patients with normal left ventricular ejection fraction (LVEF) and elevated left-sided filling pressures have a normal left ventricular diastolic size is a point of controversy. ...
Chejtman Demian D Doppler-Echocardiography Section, Division of Cardiology, Hospital Universitario Austral, Perón 1500, B1629AHJ Pilar, Argentina. - - 2010
Left ventricular hypertrophy (LVH) may be a physiological finding and may also be associated with different disease entities and hence, with different outcomes. Regional myocardial function can be assessed with color Doppler tissue imaging, specifically by the waveform of the isovolumic contraction (IC) period and the regional systolic wave ("s"). ...
Nahum Julien - - 2010
BACKGROUND: Longitudinal myocardial deformation indexes appear superior to left ventricular ejection fraction (LVEF) in assessing myocardial contractility. However, few studies have addressed the prognostic value of longitudinal motion markers (velocity, strain, and strain rate) in predicting outcome in heart failure patients. METHODS AND RESULTS: The study included 125 consecutive symptomatic ...
Buralli Simona - - 2010
Abnormal matrix metalloproteinase (MMP) activity and diastolic dysfunction may affect left ventricular (LV) remodeling and prognosis, but it is not known whether the combined evaluation of MMP-3 and MMP-9 and variables of diastolic dysfunction are useful for the risk stratification of patients with systolic heart failure (HF). Therefore, this study ...
Aase Svein A - - 2010
AIM: To resolve the event in tissue Doppler (TDI)- and speckle tracking-based velocity/time curves that most accurately represent aortic valve closure (AVC) in infarcted ventricles and at high heart rates. METHODS: We studied the timing of AVC in 13 patients with myocardial infarction and in 8 patients at peak dobutamine ...
Walker M D - - 2010
Data on the presence, extent, and reversibility of cardiovascular disease in primary hyperparathyroidism (PHPT) are conflicting. To evaluate the heart in PHPT, we assessed cardiac structure and diastolic function in patients with mild PHPT compared with age- and sex-matched controls. This was a case-control study. The study was conducted in ...
Hummel Y M - - 2010
Tissue Doppler imaging (TDI) plays an important role in assessing diastolic function using echocardiography. However, two different methods [pulsed wave (PW-TDI) and color-coded (CC-TDI)] are currently used. We aimed to compare both measurements. We included 114 patients that were referred to our echocardiography department for evaluation of diastolic left ventricular ...
Varol Ercan - - 2010
Sixty three patients with endemic fluorosis (36 males/27 females; mean age 33.9+/-8.6years) and 45 age, sex and body mass index (BMI) matched healthy controls (30 males/15 females; mean age 32.7+/-8.8years) were included in this study. Basic echocardiographic measurements, left ventricular diastolic parameters and left ventricular myocardial performance index (MPI) were ...
Hoffmann Soren - - 2010
Aim To determine how the left ventricular wall motion assessed by echocardiographic Tissue Doppler Imaging (TDI) is affected by increasing severity of coronary artery disease (CAD) among patients with stable angina pectoris and preserved ejection fraction. This study comprises 82 patients with suspected angina pectoris, no previous cardiac history, and ...
Margulescu Andrei D - - 2010
BACKGROUND: Myocardial acceleration during isovolumic contraction (IVA) has been validated as a relatively load-insensitive noninvasive index of contractility. Its feasibility, reproducibility, and variation between segments have not been studied in detail, and thus its utility in clinical practice has not been established. METHODS: We analyzed myocardial velocity loops (median frame ...
Temporelli Pier Luigi - - 2010
BACKGROUND: Although several studies have demonstrated a good correlation between Doppler echocardiographic and invasive measurements of single hemodynamic variables, the accuracy of echocardiography in providing a comprehensive assessment in individual patients has not been validated. The aim of this study was to assess the accuracy and clinical applicability of Doppler ...
Wess G - - 2010
BACKGROUND: Tissue velocity imaging (TVI) is increasingly used in small animal cardiology. Tissue velocity of the myocardial wall can be measured by pulsed wave (PW) or color Doppler (CD) imaging methods. Currently, the same reference ranges are used for PW TVI and CD TVI methods. However, if and how both ...
Ozyigit Tolga - - 2010
Myotonic dystrophy (MD) is characterized by myotonia with dystrophic involvement of the muscles. Cardiac involvement is usually not evident in the early stages of MD. We investigated biventricular functions by tissue Doppler imaging (TDI) in MD patients with no overt cardiac involvement to explore the value of TDI in the ...
Tayyareci Yelda - - 2010
OBJECTIVES: Our aim was to evaluate subclinical left ventricular (LV) dysfunction, by two novel echocardiographic techniques, velocity vector imaging (VVI)-derived strain imaging and tissue Doppler imaging (TDI), in patients with asymptomatic, severe aortic regurgitation (AR). METHODS: Forty patients with severe AR with normal ejection fraction and 30 controls were included ...
Kidawa Michal - - 2010
In this study, impact of reperfusion delay on adverse cardiac events and right ventricular (RV) function in patients with acute right ventricular myocardial infarction (RVMI) was assessed. In 70 patients with RVMI, RV function was assessed by M-mode tricuspid annular plane systolic excursion (TAPSE) and by pulsed wave tissue Doppler ...
Kim Eun Ha - - 2010
Adult studies have reported that patients with diabetes mellitus (DM) show ultrastructural and functional myocardial deterioration. The aim of this study was to assess whether cardiac functional deterioration can be detected in pediatric patients with type I DM and whether or not a relatively short duration of DM and hyperglycemia ...
Park Yun Seon - - 2010
Although the modified Simpson's method is widely used for the assessment of left ventricular ejection fraction (LVEF), it has limitations including relatively high inter- and intra-observer variability and time consuming nature. We want to evaluate whether assessing mitral annular systolic velocity (S' velocity) by tissue Doppler imaging (TDI) can be ...
Watz Henrik - - 2010
BACKGROUND: Little is known about the role of abnormal lung function in heart size and heart dysfunction in patients with COPD. We studied the relationship of lung function with heart size and heart dysfunction and associated consequences for 6-min walk distance (6MWD) in patients with COPD of different severitites. METHODS: ...
Borg Alexander N - - 2010
Chronic primary mitral regurgitation (MR) results in enhanced filling of the left ventricle (LV) during early diastole. Filling is impaired with the onset of LV systolic dysfunction, due to increased myocardial stiffness and reduced restoring forces. We investigated echocardiographic parameters of early diastolic function in relation to LV systolic function. ...
Shin Sung-Hee - - 2010
BACKGROUND: Mechanical dyssynchrony is considered an independent predictor for adverse cardiovascular outcomes in patients with heart failure. However, its importance as a risk factor after myocardial infarction is not well defined. METHODS AND RESULTS: We examined the influence of mechanical dyssynchrony on outcome in patients with left ventricular dysfunction, heart ...
Verhaert David - - 2010
Right ventricular (RV) systolic dysfunction is a strong predictor of adverse outcomes in heart failure, yet quantitatively assessing the impact of therapy on this condition is difficult. Our objective was to compare the clinical significance of changes in RV echocardiographic indices in response to intensive medical treatment in patients admitted ...
Tigen Kursat - - 2010
BACKGROUND: Left ventricular dyssynchrony and myocardial fibrosis are common findings in patients with nonischemic dilated cardiomyopathy (NDCM). The aim of this study was to investigate the association between myocardial fibrosis and intraventricular systolic dyssynchrony (DYS-sys) in patients with NDCM. METHODS: Thirty-nine patients with NDCM and sinus rhythm were enrolled. Intraventricular ...
Andersen L J - - 2010
The present study examined the cardiac effects of football training and running for inactive pre-menopausal women by standard echocardiography and tissue Doppler imaging. Thirty-seven subjects were randomized to two training groups (football: FG; n=19; running; RG; n=18) training 1 h with equal average heart rates twice a week for 16 ...
Aypar Ebru - - 2010
Tissue Doppler imaging (TDI) can detect myocardial dysfunction related to iron load in patients with beta-thalassemia major (TM). We aimed to assess the efficacy of pulsed-wave TDI (PW-TDI) in predicting myocardial iron load in patients with TM using T2* magnetic resonance (MR) as the gold-standard non-invasive diagnostic test. 33 asymptomatic ...
Saraiva Roberto M - - 2010
Left atrial (LA) strain (epsilon) and epsilon rate (SR) analysis by two-dimensional speckle tracking can represent a new tool to evaluate LA function. To assess its potential value, the authors addressed whether LA epsilon and SR measured in normal subjects correlates with other Doppler echocardiographic parameters that evaluate LA function ...
Carasso Shemy - - 2010
BACKGROUND: Hypertrophic cardiomyopathy (HCM) is characterized by myocardial hypertrophy, fiber disarray, and fibrosis interfering with myocardial force generation and relaxation. Because conventional Doppler echocardiographic methods inadequately assess diastolic function in HCM, the aim of this study was to determine local and global left ventricular (LV) relaxation mechanics in patients with ...
Cochet Hubert - - 2010
PURPOSE: To demonstrate the feasibility of coronary magnetic resonance (MR) angiography in living mice and to evaluate a dynamic MR angiographic method for coronary flow measurement at 9.4-T field strength. MATERIALS AND METHODS: This study was conducted according to European law and was in full compliance with National Institutes of ...
Baysal Tamer - - 2010
AIM: The aim of this study was to assess the cardiac functions using conventional echocardiography and tissue Doppler imaging in childhood cancers treated with anthracyclines. METHODS: The study group was selected from the patients admitted to the pediatric oncology department for a treatment protocol that included doxorubicin. Body surface area ...
Unsworth Beth - - 2010
Right ventricular (RV) long-axis function is known to be depressed after cardiac surgery, but the mechanism is not known. We hypothesized that intraoperative transesophageal echocardiography could pinpoint the time at which this happens to help narrow the range of plausible mechanisms. Transthoracic echocardiography was conducted in 33 patients before and ...
Shanks Miriam - - 2010
This study examined the prognostic value of novel diastolic indexes in ST-elevation acute myocardial infarction (AMI), derived from strain and strain rate analysis using 2-dimensional speckle tracking imaging. Echocardiograms were obtained within 48 hours of admission in 371 consecutive patients with first ST-elevation AMI (59.7 +/- 11.6 years old). Indexes ...
Bistola Vasiliki - - 2010
Right ventricular (RV) dysfunction adversely affects prognosis in patients with chronic heart failure (CHF) due to left ventricular (LV) dysfunction. However, little evidence exists regarding the prognostic role of RV systolic and diastolic function indexes in combination with plasma B-type natriuretic peptide (BNP) in advanced CHF. Thus, 102 consecutive hospitalized ...
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